7720 HARDESON RD K & H PRINTING 2025-01-31

TFP1515 Page 3 of 4 Installation The BFV-N Wafer Style Butterfly Valves F- — — — — — — may be installed with flow in either di- SUPERVISORY rection and can be positioned either I I SWITCH horizontally or vertically. They are de- signed for installation between the fac- I SWITCH SHOWN es of ANSI Class 125 and 150 flanges. L _J WITH VALVE —The Series BFV-N are self-sealing be- - FULL OPEN tween mating flanges; therefore, they o o do not require the use of additional z z gaskets. r i 0 0 The BFV-N may be installed with any pressure class or schedule of pipe or tubing no greater than schedule 40 that END OF LINE PANEL is listed or approved for fire protection RESISTOR service and installed in accordance with the manufacturers instructions. The wafer bodies have locating lugs to F ensure proper centering of the valve AUXILIARY body when flange bolts are installed. I G 40 ND I SWITCH Refer to Figure 1 for bolt diameter. Bolts and studs must meet the mini- SWITCH SHOWN mum strength requirements of ASTM L _ xe _J WITH VALVE A307 (Grade B), and the nuts must FULL OPEN meet the minimum strength require- w J ments of ASTM A563(Grade A). 0 °-° m o Prior to installation, close the valve. Z Spread the flanges apart to allow the - valve to slip easily between the flang- es. Make sure the pipe flange faces POWER + are clean of any foreign material such as scale, metal shavings, or weld- ing slag. Insert the valve between the flanges (without flange gaskets). Do not apply lubricant to the seat faces as this may damage the seat materi- CONTACT RATING .... 1/2A @ 125 VDC al. Be sure to center the valve and do 1/4A @ 250 VDC not damage the liner. Relax the sepa- 15.1A/12HP @ 125,250 VAC ration of the flanges, install, and hand- 5A @ 125 VAC 1" tighten all flange bolts. Slowly open the valve, checking for free movement FIGURE 2 of the disc. If valve opens freely, leave MODEL BFV-N BUTTERFLY VALVE the valve in the open position, and us- -INTERNAL SWITCH WIRING DIAGRAM- ing a cross-draw sequence, tighten all flange bolts until the valve is metal-to- metal with both mating flanges. Rec- ommended tightening torques are list- NOTE ed in Table 1. For outdoor applications with inter- Nominal Recommended Flange Size Minimum Torque Be certain to keep flange faces as par- nal supervisory switches, it is recom- allel as possible during and after tight- mended that wiring connections be ANSI Inches Ft. Lbs ening bolts or studs. After final tight- made at a temperature above 150F DN (Nm) ening, again check the valve for full (-9°C), in order to insure sufficient flex- 2-4 20-30 opening and closing. ibility of the wire lead insulation. DN50- DN100 (27,1 -40,7) As applicable, refer to Figure 2 for the 5-8 33-50 internal switch wiring diagram. DN125- DN200 (44,7-67,8) Conduit and electrical connections 10 53-75 are to be made in accordance with DN250 (71,8- 101,7) the authority having jurisdiction and/ or the National Electrical Code. With 12 80- 110 reference to Figure 2,the"supervisory DN300 (108,4- 149,1) switch" is intended for connection to the supervisory circuit of a fire alarm TABLE 1 control panel in accordance with NFPA RECOMMENDED TORQUES 72. The "auxiliary switch" is intend- ed for the unsupervised connection to auxiliary equipment in accordance with NFPA 70, National Electric Code.